This paper describes the problems associated with small hydroelectric power generation, and analyze the use of existing water conservancy facilities, such as reservoir dams, Hydraulic power plants, or irrigation channels, where these facilities provide the supply and drainage pipes and the feasibility of Small hydroelectric generating set from Taipower Company (Except new or flow-type micro-units). In addition, this paper uses variety of analytical methods, and selects more potential small hydroelectric power plant site.